| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | -4 | 129 |
| 2015 | 0.36 | 135 |
| 2014 | -2.64 | 150 |
| 2013 | 10.9 | 75 |
| 2012 | 9.97 | 83 |
| 2011 | 27.07 | 16 |
| 2010 | 20.72 | 41 |
| 2009 | 3.39 | 127 |
| 2008 | 10.83 | 106 |
| 2007 | 7.5 | 147 |
| 2006 | 14.32 | 107 |
| 2005 | 32.67 | 26 |
| 2004 | 9.71 | 108 |
| 2003 | -1.77 | 152 |
| 2002 | 4.71 | 127 |
| 2001 | 4.17 | 140 |
| 2000 | 18.28 | 56 |
| 1999 | -3 | 152 |
| 1998 | -1.84 | 144 |
| 1997 | 11.28 | 96 |
| 1996 | 17.22 | 67 |
| 1995 | 10.12 | 97 |
| 1994 | 37.37 | 37 |
| 1993 | -1.72 | 131 |
| 1992 | -15.79 | 131 |
| 1991 | 8.29 | 89 |
| 1990 | 3.67 | 104 |
| 1989 | 5.88 | 105 |
| 1988 | 0.21 | 116 |
| 1987 | -12.98 | 124 |
| 1986 | -10.06 | 120 |